Ecd System (W/ Urea Scr System) Active Control Engine Mount System

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT INTAKE SYSTEM

INSPECT VACUUM SWITCHING VALVE SUB-ASSEMBLY (FOR ENGINE MOUNTING) (RESISTANCE)

INSPECT FRONT ENGINE MOUNTING INSULATOR

INSPECT VACUUM SWITCHING VALVE SUB-ASSEMBLY (FOR ENGINE MOUNTING) (POWER SOURCE VOLTAGE)

CHECK HARNESS AND CONNECTOR (VACUUM SWITCHING VALVE SUB-ASSEMBLY (FOR ENGINE MOUNTING) - ECM)

CHECK HARNESS AND CONNECTOR (VACUUM SWITCHING VALVE ASSEMBLY SUB-ASSEMBLY (FOR ENGINE MOUNTING) - NO. 1 INTEGRATION RELAY)

INSPECT NO. 1 INTEGRATION RELAY (EFI MAIN2)

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

1. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
   
2. After replacing the ECM, the new ECM needs registration (LandCruiser RM0000012XK0AUX.html) and initialization (LandCruiser RM000000TIN08HX.html).
   

1. Inspect intake system (LandCruiser RM000001A3W03SX_01_0008.html).
   

   Result:

   Repair any trouble areas.
   

1. Inspect the vacuum switching valve sub-assembly (for engine mounting) (LandCruiser RM00000463G006X.html).
   

1. Disconnect the vacuum hose from the front engine mount insulator assembly.
   

2. Using a vacuum pump, apply vacuum of 80 kPa (600 mmHg, 23.622 in.Hg) and wait for 1 minute.
   

3. Check that there is no change in the needle movement of the vacuum pump gauge.
   

4. Check that there is no fluid leakage caused by a break in the diaphragm.
   

   OK:

   Vacuum does not leak.
   

5. Reconnect the vacuum hose.
   

1. Disconnect the vacuum switching valve sub-assembly (for engine mounting) connector.
   

2. Turn the engine switch on (IG).
   

3. Measure the voltage according to the value(s) in the table below.
   

   Standard Voltage:

   Tester Connection	Condition	Specified Condition
   C80-1 - Body ground	Engine switch on (IG)	11 to 14 V

   Text in Illustration

   *1	Front view of wire harness connector (to Vacuum Switching Valve Sub-assembly (for Engine Mounting))

4. Reconnect the vacuum switching valve sub-assembly (for engine mounting) connector.
   

1. Disconnect the vacuum switching valve sub-assembly (for engine mounting) connector.
   

2. Disconnect the ECM connector.
   

3. Measure the resistance according to the value(s) in the table below.
   
   

   Standard Resistance:

   
   

   Tester Connection	Condition	Specified Condition
   C80-2 - C150-12 (ACM)	Always	Below 1 Ω
   C80-2 or C150-12 (ACM) - Body ground and other terminals	Always	10 kΩ or higher

4. Reconnect the ECM connector.
   

5. Reconnect the vacuum switching valve sub-assembly (for engine mounting) connector.
   

1. Remove the No. 1 integration relay from the engine room relay block.
   

2. Disconnect the vacuum switching valve sub-assembly (for engine mounting) connector.
   

3. Measure the resistance of the wire harness side connectors.
   
   

   Standard Resistance:

   
   

   Tester Connection	Condition Specified	Condition
   1K-22 - C80-1	Always	Below 1 Ω
   K-22 or C80-1 - Body ground and other terminals	Always	10 kΩ or higher

1. Inspect the No. 1 Integration relay (EFI MAIN2) (LandCruiser RM00000469101AX_01_0006.html).